Belt guide



Dec. 31, 1929. Q LE RUD 1,741,852

BELT GUIDE Filed Sept. 3, 1926 2 Sheets-Sheet 1 I 5 Gustav Lelfud abtozmg Dec. 31, 1929. Q LE RUD 1,741,852

BELT GUIDE Filed Sept. 3, 1926 2 Sheets-Sheet 2 gin/vento@ Gustav Lefud amg Patented Dec. 31, 1929 PATENT orFlcE GUSTAV LE BUD, OF ARGUSVILFLE, NORTH DAKOTA BELT GUIDE Application led September 3, 1926. Serial No. 133,385.

My invention relates to a belt guide Which is adapted to provide a means for guiding a belt so that the same will be automatically directed to remain practically central on the 5 pulleys on which the belt is adapted to operate.

A. feature of my invention resides in a simple means having an inexpensive naturefyet providing` a very eiiective means of guiding l0 the belt in its operation. The guiding of the belt is practically entirely automatic With my belt guide so that as the operating belt travels over my guide, which may be placed in any convenient position, should the belt l5 in operationtend to slide fromone side to the other, my guide automatically directs the same back to a central position in relation to its operation with the pulleys it is operating over.

A feature of my invention is in a guide having a 'frame support or standard provided With a conical pivoted operating member which is mounted upon roller bearings and `tree to turn on its axis. The standard is adapted to carry the guide cone pulleys Which are mounted "freely rotatable on their axes y and are so positioned as to provide an upwardly inclined annular edge which provides the means for engaging the edge of thevbelt on either side ot the same to direct and automatically center. the belt on its operating pulleys.

The constructionof my guide is such that the pair of guide cone pulleys are held on the central standard which is free to rotate Cri ` on its axis and the main frame support for the standard is preierably'- mounted at an incline `so that the Whole-guide is adapted to set back at an angle to support the guide pulleys in` a position to operate more effectively. This incline being in the direction of the travel of the belt.

These features, together With other objects 4 and details of particular construction Will be 5 belt guide.

more clearly and fully set forth in the fol- F igure 2 is a iront view of the same.

Figure?) is a section on the line 3 3 of Figure 2.

Figure d is a section on the line leof Figure 3.

s The drawings show the automatic belt guide A as it would appear in operation in the plan view in Figure 1 with the belt B traveling over the same. The belt B rests or contacts With the pulleys 10. The idea is that the guide Works automatically by the Weight of the belt.

My belt guide A is formed With a base portion 11, which is adapted to support the standard 12 on the roller bearings 13, While a suitable bolt and'nut connection 14 hold the standard 12 attached to the base 11. The roller bearings 13 permit the standard to rotate freely in the base 11.

The standard 11 is formed with an upper flat plate like end portion 15 upon Which the pulley carrier and supporting member 16 is adapted to rest. rThe member 16 is provided with iat side Walls 17 dependingl from either side and which are adapted to support the shafts 18 upon which the pulleys 10 rotate. The member 1G is of a V shaped nature and is provided with a depending' end having a ball portion 19 formed thereon which is adapted to be held freely in a socket formed in the base portion 11 and by the cover member 2O which extends from the ball 19.

Each of the pulleys 1() are provided with a frustum conical portion 22 which is posi tioned in a manner on the shaft-s 18 so as to provide a bearing` for the belt B extending in a line above the top of the supporting member 16 and on either side of the saine. The outer ends of the pulleys 10 are formed With 'cylindrical portions V23 which extend angularly from the frustum conical portions 22 in a manner to project, so to speak, upwardly oneitlier side of the side edges 24 oi' the belt Bf In operation my automatic belt guide A is preferably placed at an inclined angle as is illustrated in Figure 3. Then when the belt B is operating over the guide pulleys 10, should the belt be inclined to move o of its operating pulleys, which are not illus tratedin the drawings, my belt A automatically immediately operates to bring the belt back to the center again and no adjustment is necessary. The guide operates automat itally by the weight of the belt and even though the operating pulleys are not in liiie on a threshing separator, where the wind oftenfshifts` the belt to one side, my guide is always in readiness to automatically shift the beltcentrally in relation to thev operating pulleys.

The upper end of the supporting standard 12 is formed with recess portions" '27 on either side, beneath-which pin .members 28 are adapted to freely engage to hold the supporting member 16 against free disengagementfrom' the apex 26, yet permitting the same to hingedly hook on the apex-26. v

The operation is very simple in'my guide A as should the belt shift so that the edge 24 will engage the upwardly inclined surface of-the portion 23 of either of the pulleys 10, then the standard 12 is rotated slightly while the ball joint 19 limits the rotation and allows just sufficient movement-to permit the pulleys 1() to extend at such an angle in rela tion to the belt B to strike either edge 24 and cause the belt to be moved backto the center automatically.

I provide coil springs 25 extending from the standard 12 and the sides 17 of the pulley supporting member 16, which act to adjust the pulleys 10 and permit a slight hinging movement from the apex 26 of the support 12, thus permitting the pulleys to oscillate on the apex 26 sufficiently to keep the belt in operating contact with the pulleys 10. This construction, together with the bearings 13 and the ball joint 19 permits movement in direction to the guide pulleys 1() so as to most effectively operate the belt B.

My belt guide A operates very effectively owing to its free adjustment and yet limited movement in angular direction so that the guiding of a belt operating on the same is very accurate without requiring adjustment so that all the operation is automatic and in a manner to keep the belt central in relation to the operating pulleys.

Ihave found my belt to be very desirable for grain separators and other threshing machines where long belts are used and where it is desirable to be sure that the belt is in operation position at all times.

In accordance with the patentstatutes I have described the principles of'operation of my invention together with the particular formation andlconstruction of the same, of which I desire to represent the'best=embodi ment, and while the drawings show aparticular construct-ion and form, I do notfwish to my invention to the scope-- of the following claims,

IA claim iff/41,852

1. An automatic belt guide includingl a pair of pulleys, an angular support for said pulleys, operable means by the motion of the belt for rotatably and hingedly supporting said support between said pulleys, and means to limit the transverse shifting movement of the belt guided by said belt guide.

2 A belt guide having an automatic operation by the belt which is operating over said guide including, pulley members having a frusto conicalf portion, a-cylindrical portion extending over said frusto conical portion adapted to form a guiding surface for the sides of a belt, and means located between said pulley members forsupporting said pulleys to permit same to bevmoved as a un'itin an angular transverse position.

A guide for a belt comprising, a pair of pulleys having a conical portion, a cylindrical portionl adjacent said conical portion, means for supporting said pulleys with their axes exteiidingangularly to each other, and means permitting said pulleys to' oscillate automatically by the oscillation of the belt'tran's- Verse'ly and at'right angles to said transverse oscillation.

1. An automatic belt guide including, a

. pair of pulleys, a supporting standard, means for rotatably'supporting said standard, and a V shaped supporting `member adapted to rest upon said standard to permit the hinging of said V shaped supporting member while said standard can rotate in said supporting means, and means for limiting the degree of rotation.

5. An automatic guide for a belt comprising, a base portion, a rotatable supporting standard held in said base portion, a reduced end portion formed on said standard, a V- shaped hood resting on said reduced end, and shafts extending from each side of said V- shaped hood adapted to support idle pulleys freely and rotatably, said pulleys being moved automatically by the operation of the belt passing thereover so as to engage the side of the belt and cause the belt to be centered.

6.4 An automatic belt guide including, pulleys upon which the belt isvadapted to operate, frusto-conical portions on said pulleys, supporting means for said lpulleys adapted to automatically direct said frustro-coi'lical portions to engage the side edge of the operating belt to guide the same in a manner to cause the belt to be automatically centered, said supporting means for'said pulleys beingl disposed between said pulleys andv including means to permit an oscillating movement in vertical plane andhorizontal plane.

GUSTAV LE BUD. 

